A basic stir plate at an exceptional value! Northern Brewer brings you this specially made adjustable speed stir plate, perfect for use with our 1 and 2 liter Yeast Starter kits. Comes with a 1 inch stir bar. Using a stir plate on a yeast starter maximizes the individual cells' contact with wort, which improves nutrient and sugar uptake, leading to increased and rapid replication. You can achieve the same result of a motionless 2 liter starter in 0.5 liters of starter on a stir plate! The Northern Brewer Stir Plate is 7" in diameter and 1.5" tall, with 0-2000 rpm. Update!As of July, 2011 we have a new and improved version of our stir plate. Enhanced electronic components give a finer level of speed adjustment and more durability. An on/off switch has been added as well.